Nitrogen.

History

• Discovered by Daniel Rutherford in 1772

Location

• Most common element in the atmosphere
• found in proteins and many other organic compounds

Physical Properties

• Freezing/melting point: -209.9 degrees C (-395.8 F)
• Boiling/condensation point: -195.8 degrees C (-320.4 F)
• Is a colorless, odorless gas
• occurs naturally as a gas on earth
• Is not found naturally as a liquid or solid
• Most common gas in the Atmosphere

Chemical info

• Two natural isotopes, N-14 (99.63%) and N-15 (0.37%)
• Man mad isotopes include N-12, N-13, and N-16, all of which are radioactive
• very low reactivity
• nonmetal
• in group 5a, the nitrogen group

Present Day Uses

• used in ammonia and nitric acid
• used in multiple oxides, including Nitrous Oxide, Nitric Oxide, and Nitrogen Dioxide. (Yes, Nitrous Oxide is nos.)
• found in many photographic developers
• found in morphine, caffeine, and quinine

Sources

• "nitrogen." Compton's by Britannica. 2008. Encyclopædia Britannica Online School Edition.

• The Periodic Table :)